Septic tank



0. M. c. BAKER Sept.

sw m-1c TANK Filed Jan. 11, 1926 m 1 1 a a lf s 9 Z 10 U 5 4 2 I 3 5 1 1 m 0000 0000 0000 000 i2 0000 000 2 0 000000 000 000 0 000 MT 0 Patented Sept. 6, 1927. 2

UNITED STATES PATENT "OFFICEr,

OTIS M. o. BAKER, on JEANNETTE, PENNSYLVANIA, assrenon or onn-roun'rrr 'ro JOSEPH DE PAOLO, or JEANNETTE, PENNSYLVANIA.

' snr'rrc TANK.

Application filed'J'anuary 11, 1926. Serial No. 80,512.

My invention relates to a septic tank for use in connection with a sewage system for rural districts which are not provided with sewage disposal sewerage.

The primary object of this invention is to provide a septic tank of the type described, in a manner as hereinafter referred to, which functions for the sanitary disposition of sewage by utilizing water only as a disintegrating agent.

Further objects of this invention are to provide a device of the class stated, which is simple in its construction and arrangement. strong, durable and efficient in its use, and comparatively inexpensive to manufacture and install.

Vith the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the arrangement and details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing forming a part of this specification wherein like numerals of reference designate corresponding parts throughout the several views Figure 1 is a longitudinal vertical sectional view of a septic tank in accordance with my invention.

Figure 2 illustrates its embodiment in a sewage system.

Figure 3 is a top view of the septic tank with the cover removed therefrom.

Referring in detail to the drawing my improved septic tank comprises a rectangular hollow body portion 1, which may be constructed from any suitable material, preferably concrete or cast iron. The body portion consists of a bottom 2, side walls 3 and 4, and end walls 5 and 6. The body portion 1 is open at its top and is provided with a cover 7, which latter is maintained in position by being seated in a recess 8 formed in the upper edges of the side and end walls.

A centrally disposed transversely extending partition 9 is removably mounted in the body portion 1, and is maintained in position by having its vertical side edges engaged in the vertically disposed parallel grooves 10 which are formed on the inner side of the p respective side walls 3 and 4. The partition 9 is provided with an aperture 11, disposed centrally of and adjacent to the lower end thereof.

A partition 12, extending parallel relatively to the partition 9, is removably' mount ed in the body portion 1 and is maintained in position by having its vertical side edges en gaged in the vertically disposed parallel grooves 13 which are formed on the inner side of the respective side walls 3 and 4. The

partition 12 is positioned forwardly of the partition 9 and spaced therefrom providinga compartment 14 therebetween. The partition 12 is provided with an aperture 15, disposed centrally of and adjacent to the upper end thereof.

The forward side of the partition 12 isand a lower compartment 21. Each of the plates 18 and 19 is formed with a plurality of comparatively small apertures 22.

An elbow inlet conduit 23 is fixed in the. end wall 6, adjacent to the upper end thereof. The outlet port 24, of the conduit 23, is positioned adjacent to the bottom 2, of the body portion 1. Anelbow outlet conduit 25 is fixed in the end wall 5, adjacent to the upper end thereof. The inlet port 26 of the conduit 25 is positioned adjacent to the bottom 2, of the body portion 1. The conduit 25 extends through the strainer plates 18 and 19. The latter are formed with complemental recesses 27 to allow the extension of the conduit 25 therethrough, and are in two sections to permit of their removal from the ledges 16 and 17 and their replacement thereon.

The inlet conduit 23 is adapted to be connected to the conduit leading from the build ing structure for which the sewage system is intended, and the conduit 25 is connected to the waste drain 28. The latter is constructed from a plurality of pipe sections, rovided with clearances 29, therebetween, with the exception of a few connected sections 30, disposed adjacent to the septic tank.

In practice the whole sewage apparatus is buried beneath the ground, with the waste drain 28 embedded in cindcrs, rocks or other coarse materials which will absorb the sewage as it comes from the waste drain through the clearances 29 between the pipe sections, constituting the drain 28. i The body portionl is at all times completely filled with water and the sewage enters the tank through the inlet conduit 23 and passes through the partition aperture 11 into the compartment 14, and to the upper compartment 20 through the partition aperture 15. The sewage then enters the lower compartment 21, through the apertures 22 in the strainer plates 18 and 19, from which it past es out of the tank into the waste drain 28 through the conduit 25 Where it is absorbed in the porous bed of the waste drain.

The whole system operates by gravity and the sewage on its passage through my improved septic tank is disintegrated and forced into the waste drain 28 always leaving the tank filled with pure water, thereby providing a sanitary eliicient and economic device for sewage disposal.

-The partitions 9 and 12 and the strainer plates 18 and 19 being removable, the same and the body portion maybe conveniently cleaned and the partitions 9 and 12 and strainer plates 18 and 19 readily replaced if broken.

WV'hat I claim is:

1. In a device for the purpose set forth, a septic tank comprising a rectangularly shaped body portion; a cover therefor; a forwardly disposed, vertically extending partition removably mounted in said body portion; a rcarwardly disposed vertically extending vpartition removably mounted in said body portion; said partitions dividing said body portion into a front compartment, an intermediate compartment, and a rear compartment; said forwardly disposed partition formed with an aperture formed adjacent to the upper end thereof; said rearwardly disposed partition having an aperture formed adjacent to the lower end there of; an inlet conduit fixed to said body por tion and having its inlet port disposed adj acentto the lower end of said rear compartment; an outlet conduit fixed to said body portion and having its inlet port disposed adjacent to the lower end of said front compartment; and a horizontally extending strainer plate removably mounted in said front compartment and disposed above the inlet port of said outlet conduit.

' In testimony whereof I afiix my signature. I

OTIS M. o. BAKER. 

